Which of the following is NOT true of Twitter?

A function called "Direct Messages" facilitates completely private messages between mutually follow

Distinction is allowed between a personal profile and a corporate profile

Twitter accounts can be grouped into related feeds

Twitter famously devised the use of hashtags

Which of the following is NOT true of Pinterest?

Clicking a pin gives supplemental information included with the pin

No pins include the URL of the source of the pin

Traffic from Pinterest is likely to be highly engaged and often purchase minded